Pipeline connection flange with compression-resistant structure

Abstract

The invention discloses a pipeline connection flange with a pressure-resistant structure, which is characterized in that a driving mechanism in a fixed cylinder is matched with a lacing wire structure on the peripheral side through a plurality of reinforcing pieces to form a firm supporting system, so that stress can be effectively dispersed when a flange plate bears external pressure, and the pressure resistance of the flange plate is improved. And the damage risk caused by local stress concentration is prevented. Under the action of pressure, the reinforcing piece can uniformly distribute external force to the periphery of the fixing cylinder, so that excessive concentration at a certain point is avoided, and the possibility of material fatigue and yield is reduced. And meanwhile, the overall supporting capacity is further enhanced through the tie bar structure, a force transmission network is constructed, connection between the assemblies is more stable, and the overall strength is improved. According to the structural optimization, the flange plate can still keep good performance under the high-load working condition through a reinforced support and stress dispersion mechanism.

Description

Technical Field

[0001] The invention belongs to the field of flanges, and in particular relates to a flange for pipe connection with a pressure-resistant structure. Background Art

[0002] Flange is also called flange or flange. Flange is a part that connects pipes to each other and valves to each other. It is connected to the pipe end. Flanges are generally used in pairs. A pair of flanges are set with corresponding mounting holes, and the pipes are well connected by bolts and other connectors passing through the mounting holes. The pressure resistance of the flange is an important indicator to measure the quality of the flange, and it is also a guarantee to ensure the normal operation of the pipeline.

[0003] The Chinese patent with the publication number CN103363215A discloses a flange, specifically a pressure-resistant flange, belonging to the field of flange equipment design technology. It includes a flange plate, characterized in that a pipeline connecting pipe is provided on the flange plate, a pressure-resistant pipe is sleeved on the pipeline connecting pipe, the pipe diameter of the pressure-resistant pipe is larger than the pipeline connecting pipe, and the pressure-resistant pipe can move on the pipeline connecting pipe. The flange plate is welded to the pipeline connecting pipe or screwed to be connected or integrated. The structure of the present invention is reasonable and simple, and it is easy to manufacture. Through the present invention, the pressure-resistant pipe is pulled out during operation, and the pressure-resistant pipe covers the welding point between the pipeline connecting pipe and the pipeline. At this time, a part of the pressure-resistant pipe is sleeved on the pipeline, and a part is sleeved on the pipeline connecting pipe. Finally, one end of the pressure-resistant pipe is welded to the pipeline, and the other end is welded to the pipeline connecting pipe. With this structure, the connection between the flange and the pipeline is tightened, and the risk of cracks and the like at the connection between the flange and the pipeline caused by excessive internal pressure of the pipeline is prevented.

[0004] In the design of traditional flanges for pipe connections, a simple fixed structure is usually adopted, which mainly relies on the thickness and material strength of the flange to withstand external pressure. However, this design has the problem of local stress concentration, which can easily lead to fatigue and failure of the flange and connecting parts, especially under high load or severe vibration conditions. Since the connection between the flange and the pipeline usually lacks an effective force dispersion mechanism, the externally applied force tends to concentrate on a specific point, causing the material to yield and fail. In addition, conventional technology fails to effectively integrate reinforcements and tie rod structures, and fails to form a comprehensive support system, resulting in the stability and compressive resistance of the overall structure being limited.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a pipe connection flange with a pressure-resistant structure, thereby solving the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A flange for pipe connection with a pressure-resistant structure comprises: a flange plate, a fixing cylinder fixedly connected to one side of the flange plate, the fixing cylinder and the flange plate are combined to form a step structure, the fixing cylinder is rotatably connected to a driving mechanism inside, a plurality of reinforcement members are driven by the driving mechanism on one side of the fixing cylinder, a tie rod structure that cooperates with the reinforcement members is fixedly connected to the circumference of the fixing cylinder, a plurality of through holes are arranged in a ring shape on the opposite side of the flange plate, a pipe is welded to one side of the driving mechanism member, the pipe and the reinforcement members cooperate with each other to realize stress transfer, and the tie rod structure and the reinforcement members also cooperate with each other to transfer stress.

[0009] Optionally, the driving mechanism includes a rotating disk rotating on the first side inside the fixed cylinder, the rotating disk is responsible for receiving input power and rotating, and the first side of the rotating disk is provided with gear teeth; the second side of the inner wall of the fixed cylinder is rotatably connected to a plurality of bevel gears meshing with the gear teeth.

[0010] Optionally, one end of the bevel gear is connected to a connecting block with a tool groove, and a groove matching the connecting block is opened on the circumferential side of the outer wall of the fixed cylinder, and the tool groove includes but is not limited to a cross groove, a rectangular groove, and a straight groove.

[0011] Optionally, the reinforcement member includes a connecting piece slidably connected to one side of the fixed cylinder, a sliding groove for the connecting piece to slide is opened on one side of the fixed cylinder, the sliding groove is connected to the space of the fixed cylinder, a first reinforcing rib is fixedly connected to one side of the connecting piece, a welding piece is fixedly connected below the first reinforcing rib, the welding piece is adapted to the outer wall of the pipe, and the thickness of the welding piece is greater than the thickness of the first reinforcing rib.

[0012] Optionally, a plane thread A is provided on the second side of the rotating disk, and a screw thread matching the plane thread A is provided on the side of the connecting piece facing the rotating disk. The plane thread A and the screw thread can drive the connecting piece to slide in the sliding groove. At the same time, the self-locking effect between the plane thread A and the screw thread can fix the connecting piece inside the sliding groove when not sliding.

[0013] Optionally, a plurality of positioning groups are provided on a side of the fixed cylinder away from the flange, and the positioning groups include two positioning blocks fixedly connected to one side of the fixed cylinder, a gap is left between the two positioning blocks, and the first reinforcing rib is located in the space of the gap.

[0014] Optionally, the tie rod structure includes a connecting ring, a plurality of first tie rods are fixedly connected between the connecting ring and one side of the flange, a second tie rod is fixedly connected above the first tie rod, and the upper part of the second tie rod is parallel to the edge of the flange, and a plurality of second tie rods are fixedly connected below the first tie rod and fixedly connected to the outer wall of the fixed tube.

[0015] Optionally, a plurality of guide grooves are arranged in a ring shape on one side of the connecting ring facing the connecting piece, and the screw thread of the connecting piece slides inside the guide grooves.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described below at the same time:

[0017] The internal driving mechanism of the fixed tube of the present invention cooperates with the rib structure on the peripheral side through multiple reinforcements to form a solid support system, which enables the flange to effectively disperse stress when subjected to external pressure and prevent the risk of damage caused by local stress concentration. Under the action of pressure, the reinforcement can evenly distribute the external force around the fixed tube to avoid excessive concentration at a certain point and reduce the possibility of material fatigue and yield. At the same time, the rib structure further enhances the overall support capacity and constructs a force transmission network to make the connection between the components more stable and improve the overall strength. This structural optimization ensures that the flange can still maintain good performance under high-load conditions by strengthening the support and stress dispersion mechanism.

[0018] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] In the figure:

[0021] Figure 1 This is one of the schematic diagrams of the flange three-dimensional structure;

[0022] Figure 2 This is the second schematic diagram of the flange three-dimensional structure;

[0023] Figure 3 This is the third schematic diagram of the flange three-dimensional structure;

[0024] Figure 4 for Figure 1 Schematic diagram of the structure at A in the middle;

[0025] Figure 5 This is the fourth schematic diagram of the flange three-dimensional structure.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Flange; 2. Fixing tube; 3. Reinforcement; 4. Tie rod structure; 5. Through hole; 6. Pipe; 7. Rotating plate; 8. Gear teeth; 9. Bevel gear; 10. Connecting block; 11. Connecting piece; 12. Slide groove; 13. First reinforcing rib; 14. Plane thread A; 15. Screw thread; 16. Positioning block; 17. Connecting ring; 18. First tie rod; 19. Second reinforcing rib; 20. Second tie rod; 21. Guide groove.

[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] See also Figure 1-5 As shown, in this embodiment, a flange for pipe connection with a pressure-resistant structure is provided, including a flange plate 1, a fixing cylinder 2 is fixedly connected to one side of the flange plate 1, and the fixing cylinder 2 and the flange plate 1 are combined to form a step structure, the fixing cylinder 2 is internally rotatably connected to a driving mechanism, a plurality of reinforcement members 3 are driven by the driving mechanism on one side of the fixing cylinder 2, a tie rod structure 4 that cooperates with the reinforcement member 3 is fixedly connected to the circumferential side of the fixing cylinder 2, a plurality of through holes 5 are arranged in a ring shape on the opposite side of the flange plate 1, a pipe 6 is welded to one side of the driving mechanism, and the pipe 6 cooperates with the reinforcement member 3 to realize stress transfer, and the tie rod structure 4 and the reinforcement member 3 also cooperate with each other to transfer stress.

[0031] The internal driving mechanism of the fixed tube of the present invention cooperates with the rib structure on the peripheral side through multiple reinforcements to form a solid support system, which enables the flange to effectively disperse stress when subjected to external pressure and prevent the risk of damage caused by local stress concentration. Under the action of pressure, the reinforcement can evenly distribute the external force around the fixed tube to avoid excessive concentration at a certain point and reduce the possibility of material fatigue and yield. At the same time, the rib structure further enhances the overall support capacity and constructs a force transmission network to make the connection between the components more stable and improve the overall strength. This structural optimization ensures that the flange can still maintain good performance under high-load conditions by strengthening the support and stress dispersion mechanism.

[0032] In this embodiment, the driving mechanism includes a rotating disk 7 rotating on the first side inside the fixed cylinder 2. The rotating disk 7 is responsible for receiving the input power and rotating, thereby driving the movement of the subsequent components. The first side of the rotating disk 7 is provided with gear teeth 8; the second side of the inner wall of the fixed cylinder 2 is rotatably connected with a plurality of bevel gears 9 meshing with the gear teeth 8. One end of the bevel gear 9 is connected to a connecting block 10 with a tool groove, and the peripheral side of the outer wall of the fixed cylinder 2 is provided with a notch matching the connecting block 10, and the tool groove includes but is not limited to a cross groove, a rectangular groove, and a straight groove.

[0033] The reinforcement member 3 includes a connecting piece 11 slidably connected to one side of the fixed tube 2. A slide groove 12 for sliding the connecting piece 11 is provided on one side of the fixed tube 2. The slide groove 12 is connected to the inner space of the fixed tube 2. A first reinforcing rib 13 is fixedly connected to one side of the connecting piece 11, and a welding piece is fixedly connected below the first reinforcing rib 13. The welding piece is designed to fit the outer wall of the pipe 6, and the thickness of the welding piece is greater than the thickness of the first reinforcing rib 13.

[0034] By setting the welding sheet, the first reinforcing rib 13 can be welded to the top of the pipe 6, so that when the stress is generated by extrusion, the stress is effectively transferred to the pipe 6, thereby achieving a reasonable distribution of the corresponding stress. This design ensures that the force generated by the pipe 6 when working can be evenly dispersed, reduces the risk of local stress concentration, and helps to improve the overall strength and durability of the pipe 6.

[0035] In addition, the design consideration that the thickness of the welding sheet is greater than the thickness of the first reinforcing rib 13 significantly improves the convenience of the welding operation. When the thickness of the welding sheet is moderate, the worker can perform straight welding in the space between each two connecting sheets 11 without having to weld at an angle. This straight welding method not only reduces the complexity of the operation, but also improves the comfort and safety of the welding process. The worker can maintain a more stable posture during welding, reducing physical fatigue caused by bending or tilting for a long time, and improving the welding quality.

[0036] The second side of the rotating disk 7 is provided with a flat thread A14, and the side of the connecting piece 11 facing the rotating disk 7 is equipped with a screw thread 15 that matches the flat thread A14. The flat thread A14 and the screw thread 15 can drive the connecting piece 11 to slide in the slide groove 12, and the self-locking effect between the flat thread A14 and the screw thread 15 when not sliding can fix the connecting piece 11 inside the slide groove 12. By driving the movement of the connecting piece 11 by the rotating disk 7, pipes 6 of different diameters can be easily adapted during welding. The flexibility of this design enables the equipment to quickly adapt to various pipe 6 sizes, avoiding the trouble of frequent replacement of equipment or tools, thereby greatly improving work efficiency. At the same time, the telescopic structure design of the connecting piece 11 eliminates the need for workers to manually take a large number of reinforcing ribs during welding. This automated design not only reduces the demand for manpower, but also reduces fatigue during operation, making welding work smoother and more efficient.

[0037] In addition, the self-locking structure between the plane thread and the thread 15 further improves the sliding stability of the connecting piece 11. When the connecting piece 11 slides in the slide groove 12, the self-locking mechanism can effectively prevent the connecting piece 11 from accidentally moving due to vibration or other external forces.

[0038] In this embodiment, a plurality of positioning groups are arranged on the side of the fixed cylinder 2 away from the flange 1, and each positioning group includes two positioning blocks 16 fixedly connected to one side of the fixed cylinder 2. An appropriate gap is left between the two positioning blocks 16, and the first reinforcing rib 13 is just located in the space of the gap. Through this design, the positioning block 16 not only provides the necessary support and positioning functions, but also plays a guiding and absorbing role when the first reinforcing rib 13 generates stress.

[0039] Specifically, when affected by external force, the first reinforcing rib 13 will experience certain stress. The generation of such stress may cause deformation or vibration of the structure, thereby affecting the overall stability. The presence of the positioning block 16 can effectively guide and control the distribution of such stress, ensuring that the stress is evenly transmitted to other parts of the fixed tube 2 through the first reinforcing rib 13.

[0040] In this embodiment, the tie rod structure 4 includes a connecting ring 17, and the connecting ring 17 is fixedly connected to one side of the flange 1 through a plurality of first tie rods 18. A second reinforcing rib 19 is fixedly connected above the first tie rod 18, and the second reinforcing rib 19 is kept parallel to the edge of the flange 1, thereby forming a stable supporting structure. At the same time, a plurality of second tie rods 20 are fixedly connected to the outer wall of the fixed tube 2 below the first tie rod 18, and this combined design effectively enhances the overall strength and rigidity.

[0041] A plurality of guide grooves 21 are arranged in a ring shape on one side of the connecting ring 17 facing the connecting piece 11, and the screw threads 15 of the connecting piece 11 slide inside the guide grooves 21. This design not only ensures the stability and flexibility of the connecting piece 11 during operation, but also provides a clear path for force transmission.

[0042] By providing the guide groove 21, when the flange is squeezed and deformed, the force generated thereby can be quickly and effectively transmitted to a specific area of ​​the connecting piece 11. Specifically, when the flange is subjected to an external force from above, it undergoes deformation, and the stress generated in this process is gradually transmitted to the connecting ring 17 through the first tie rod 18 and the second tie rod 20. Since the connecting piece 11 is located exactly inside the connecting ring 17, when the connecting ring 17 is subjected to an external force, the stress generated is directly transmitted to the connecting piece 11.

[0043] This design enables the connecting piece 11 to effectively share the stress from the connecting ring 17 and the flange, avoiding potential damage caused by stress concentration, thereby significantly improving the pressure resistance and structural stability of the entire flange. By optimizing the design of the tie rod structure 4 and the guide groove 21, not only the bearing capacity of the connecting parts is improved, but also the safety and durability of the flange under high pressure conditions are improved, ensuring the reliable operation of the equipment in complex environments and extending its service life.

[0044] Experimental example: The flanges of the present invention and the flanges in the conventional technology are both made of alloy steel.

[0045] Experimental equipment:

[0046] Test flange samples.

[0047] Pressure testing machine.

[0048] Stress test sensor.

[0049] Data logging instruments and computer analysis software.

[0050] Experimental steps:

[0051] Connect the test flange to the pressure testing machine and make sure the flange is tightly connected to the pipe.

[0052] Initial data record:

[0053] Before applying pressure, a stress test sensor is used to record the initial state data of the flange, including static stress and initial strength of the material.

[0054] Continue to apply pressure until the sample fails or reaches its limit. During the pressure application process, regularly record the stress distribution data of the flange, observe and record the flange deformation, stress concentration area and its trend with pressure change. Use computer analysis software to process the collected data and compare the performance of traditional flanges and new pressure-resistant structural flanges under high load.

[0055] During the experiment, the performance of the traditional flange and the pressure-resistant structural flange of the present invention under different pressures were compared. The following are the key experimental data:

[0056] Flange Type Maximum load capacity (psi) Failure type Traditional flange 620 Material fatigue Traditional flange 780 Local deformation Traditional flange 950 Cracks in the connection Compression-resistant structural flange 1350 Slight deformation Compression-resistant structural flange 1550 No obvious damage Compression-resistant structural flange 1800 Structural integrity

[0057] 2. Stress distribution analysis

[0058] During the loading process, local stress concentration is obvious, especially in the connection area. The stress value generated exceeds the yield limit of the material, resulting in material fatigue and damage.

[0059] After failure, cracks and obvious deformation appeared, especially at the connection. Under the same pressure conditions, the flange did not deform significantly, and the stress distribution was relatively uniform, showing good stress dispersion ability. Under 1800psi, the flange can still maintain structural integrity, with only slight deformation, which does not exceed the material tolerance.

[0060] After multiple loading and unloading cycles, the fatigue life of the traditional flange material is significantly reduced, and there are obvious cracks and deformations. After the same loading and unloading cycles, the compression structure flange has no obvious damage to the material, and the fatigue life is significantly improved, showing better durability.

[0061] The compression-resistant structural flange of the present invention is significantly superior to the traditional flange in terms of compression resistance and stress dispersion effect. The experimental results support the feasibility and reliability of the flange design in practical applications, and it is suitable for industrial environments requiring high strength and stability.

[0062] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the enlightenment of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A pipe connection flange with a pressure-resistant structure, characterized in that: include: A flange (1), one side of the flange (1) is fixedly connected to a fixing cylinder (2), the fixing cylinder (2) and the flange (1) are combined to form a step structure, the fixing cylinder (2) is internally rotatably connected to a driving mechanism, one side of the fixing cylinder (2) is provided with a plurality of reinforcement members (3) driven by the driving mechanism, the peripheral side of the fixing cylinder (2) is fixedly connected to a tie rod structure (4) that cooperates with the reinforcement members (3), the opposite side of the flange (1) is provided with a plurality of through holes (5) arranged in an annular pattern, one side of the driving mechanism is welded with a pipe (6), the pipe (6) and the reinforcement member (3) cooperate with each other to achieve stress transfer, and the tie rod structure (4) and the reinforcement member (3) also cooperate with each other to transfer stress.

2. The pipe connection flange with a pressure-resistant structure according to claim 1, characterized in that: The driving mechanism comprises a rotating disk (7) rotating on a first side inside the fixed cylinder (2), the rotating disk (7) being responsible for receiving input power and rotating, and a first side of the rotating disk (7) being provided with gear teeth (8); and a second side of the inner wall of the fixed cylinder (2) being rotatably connected with a plurality of bevel gears (9) meshing with the gear teeth (8).

3. The pipe connection flange with a pressure-resistant structure according to claim 1, characterized in that: One end of the bevel gear (9) is connected to a connection block (10) with a tool groove, and a groove matching the connection block (10) is provided on the peripheral side of the outer wall of the fixed cylinder (2), wherein the tool groove includes but is not limited to a cross groove, a rectangular groove, and a straight groove.

4. The pipe connection flange with a pressure-resistant structure according to claim 1, characterized in that: The reinforcing member (3) comprises a connecting piece (11) slidably connected to one side of the fixed tube (2); a sliding groove (12) for the connecting piece (11) to slide is provided on one side of the fixed tube (2); the sliding groove (12) is communicated with the space of the fixed tube (2); a first reinforcing rib (13) is fixedly connected to one side of the connecting piece (11); a welding piece is fixedly connected below the first reinforcing rib (13); the welding piece is matched with the outer wall of the pipe (6), and the thickness of the welding piece is greater than the thickness of the first reinforcing rib (13).

5. The pipe connection flange with a pressure-resistant structure according to claim 1, characterized in that: The second side of the rotating disk (7) is provided with a plane thread A (14), and the side of the connecting piece (11) facing the rotating disk (7) is provided with a screw thread (15) matching the plane thread A (14). The plane thread A (14) and the screw thread (15) can drive the connecting piece (11) to slide in the sliding groove (12). At the same time, when not sliding, the self-locking effect between the plane thread A (14) and the screw thread (15) can fix the connecting piece (11) inside the sliding groove (12).

6. The pipe connection flange with a pressure-resistant structure according to claim 1, characterized in that: A plurality of positioning groups are arranged on a side of the fixing cylinder (2) away from the flange (1), the positioning groups comprising two positioning blocks (16) fixedly connected to one side of the fixing cylinder (2), a gap being left between the two positioning blocks (16), and the first reinforcing rib (13) being located in the space of the gap.

7. The pipe connection flange with a pressure-resistant structure according to claim 1, characterized in that: The tie rod structure (4) comprises a connecting ring (17), a plurality of first tie rods (18) are fixedly connected between the connecting ring (17) and one side of the flange (1), a second reinforcement rib (19) is fixedly connected above the first tie rod (18), and the upper part of the second reinforcement rib (19) is parallel to the edge of the flange (1), and a plurality of second tie rods (20) are fixedly connected below the first tie rod (18) and are fixedly connected to the outer wall of the fixed tube (2).

8. The pipeline connection flange with a pressure-resistant structure according to claim 1, characterized in that: A plurality of guide grooves (21) are arranged in a circular pattern on one side of the connection ring (17) facing the connection piece (11), and the screw thread (15) of the connection piece (11) slides inside the guide groove (21).

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